If you lose about 100 hair every day for more than 3 months, you should consider seeing a doctor.
At present, drugs can only stabilize hair and delay hair loss, and can't make the fallen hair grow back. If you want your hair to grow back, you can treat it with a hair transplant.
CCTV pays attention to hair loss on the road to health —— Dr. Xu Xia, a hair transplant expert
On July 8th, CCTV-2 "The Road to Health" broadcast the program "What hair loss troubles do you know?" Experts discussed the prevention and treatment of hair loss. You can have a look:
Baidu: the road to health, hair loss
How to consult online if you have any questions: Beijing Sino-German Hospital.